Simply Trees

'Henry Duelberg' Salvia

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Twice a monthFull sunDeer resistantSpring to fall
  • Extended Blooms: This salvia variety boasts long-lasting, vibrant blue flowers that create a stunning display from spring to frost.
  • Pollinator-Friendly: The plant is an exceptional attractor of beneficial insects, especially butterflies and hummingbirds.
  • Drought Tolerance: Once established, the ‘Henry Duelberg’ Salvia shows significant drought resistance, making it a low-maintenance perennial.

More Details

The ‘Henry Duelberg’ Salvia, scientifically known as Salvia farinacea ‘Henry Duelberg’, is an enchanting perennial that adds vibrant shades of blue to gardens and outdoor spaces. Renowned for its long-lasting, deep blue flower spikes, this plant is a magnet for pollinators like butterflies and hummingbirds. With minimal care, the ‘Henry Duelberg’ Salvia can flourish in a wide array of climates, providing extended blooming periods, making it a stellar choice for garden enthusiasts looking to bring an extra dose of natural allure to their landscapes.

Growth rate: Moderate growth rate; reaches heights of 2-3 feet and a width of 18-24 inches.

Please note: Images on our website depict plants and trees at full maturity to showcase their expected grown characteristics. These images are illustrative examples only and do not represent the size of plants or trees upon delivery.

Pruning: Cut back the stems after the first flush of flowers fade to encourage a second bloom. Light pruning can be done throughout the growing season to maintain shape.

Fertilization: Apply a balanced, slow-release fertilizer in the early spring to promote robust growth and flowering.

Winter Protection: In colder zones, applying a layer of mulch before the first frost can provide added winter protection.

Choose a site with well-drained soil and good sun exposure. Amend the soil with organic matter or compost for better water retention and fertility. Dig a hole that is twice as wide but no deeper than the root ball. Place the plant in the hole, making sure the top of the root ball is level with the soil surface. Backfill the hole with soil and water thoroughly to settle the soil and eliminate air pockets. Space plants approximately 18-24 inches apart to ensure adequate air circulation. Mulching around the base of the plant can help retain moisture and regulate soil temperature.

The ‘Henry Duelberg’ Salvia shines when given ample sunlight, ideally in full sun conditions. While it can handle some degree of shade, full sun exposure ensures maximum flowering. Watering should be consistent but moderate, especially during the establishment phase, after which the plant showcases its drought-tolerant attributes, making it a hassle-free addition to your garden.

We process and ship your order as quickly as possible, typically within 1-3 business days. You will receive a shipping confirmation with tracking information once your item(s) ship.

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!

In cases of extreme cold or hot weather, we may temporarily delay shipping to ensure the well-being of your plants. Our primary focus is on delivering healthy and thriving plants to you. Rest assured, we'll make every effort to notify you of any delays promptly.

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Zones 7-10

This versatile salvia thrives in a range of climatic conditions but particularly favors warmer zones. Known for its resilience, the ‘Henry Duelberg’ Salvia can endure the heat and drought of southern summers, as well as handle milder winters. This makes it an excellent candidate for gardens across various geographies, from coastal regions to more arid locales.

Frequently Asked Questions

'Henry Duelberg' Salvia typically reaches a mature size of approximately 18 to 24 inches in height and has a similar spread. However, under optimal growing conditions and with proper care, it can sometimes achieve a slightly larger size, especially if it is a well-established and healthy plant. The plant forms dense clumps of vibrant blue flowers and attractive foliage, creating a compact and bushy appearance that is well-suited for garden borders, beds, or containers. Regular pruning and maintenance can help keep it within its desired size range and encourage continuous flowering throughout the growing season.

'Henry Duelberg' Salvia typically exhibits a fast growth rate, with the potential to add several inches to a foot or more in height and spread each year, depending on local growing conditions and care. During the growing season, which spans spring through early fall, these salvias are known to establish quickly and produce abundant foliage and vibrant blue flowers.

Rapid Establishment: When planted in the right conditions with proper care, 'Henry Duelberg' salvias can establish quickly, forming dense clumps and producing an abundance of flower spikes within a few months after planting.

Flowering Period: These salvias typically begin blooming in late spring and continue flowering throughout the summer and into early fall, providing an extended period of color and nectar for pollinators.

Self-Seeding: 'Henry Duelberg' salvias have the potential to self-seed, which can result in the growth of new plants in subsequent seasons. This can contribute to their overall population and coverage in the garden.

Maintenance and Pruning: Regularly deadheading spent flowers and pruning back the tips of stems can help maintain the plant's compact and bushy growth habit while encouraging continuous flowering.

Environmental Factors: The growth rate of 'Henry Duelberg' salvias can be influenced by factors such as sunlight, soil quality, and water availability. Providing optimal conditions, including full sun and well-draining soil, can enhance their growth rate.

Overwintering: In regions with colder winters, the growth rate may slow or the plants may go dormant during the winter months. Proper winter care can help ensure their health and vigor when the growing season resumes.

Overall, 'Henry Duelberg' salvias are valued for their fast growth and ability to provide a profusion of vibrant blue flowers in the garden. With the right care and attention to their needs, they can establish quickly and continue to flourish throughout the warm months of the year.

When planting 'Henry Duelberg' Salvia in your garden, the recommended spacing between individual plants typically depends on your specific landscaping goals and the desired look you want to achieve. Here are some guidelines for spacing 'Henry Duelberg' salvias:

Spacing for Mass Plantings or Ground Covers:
If you want to create a mass planting or ground cover effect with 'Henry Duelberg' salvias, space them approximately 12 to 18 inches apart. This closer spacing will allow the plants to grow together and form a dense carpet of blue flowers and foliage.

Spacing for Borders and Garden Beds:
For a more structured look in garden borders or beds, consider spacing 'Henry Duelberg' salvias about 18 to 24 inches apart. This spacing provides enough room for individual plants to grow and stand out while still creating a cohesive display.

Allow for Growth: Keep in mind that 'Henry Duelberg' salvias will gradually spread and expand as they mature. The initial spacing you choose should account for their eventual size. You can always adjust the spacing based on your preferences and available garden space.

Container Planting: If you're planting 'Henry Duelberg' salvias in containers, use a container with a diameter of at least 12 inches to accommodate their growth. You can space multiple salvias in the container based on the desired density.

Consider Local Conditions: Your local climate, soil quality, and specific gardening objectives may also influence your spacing decisions. Be sure to tailor the spacing to suit your garden's unique conditions and aesthetics.

Spacing 'Henry Duelberg' salvias appropriately not only ensures that they have enough room to grow but also contributes to a visually appealing and well-organized garden layout. Adjust the spacing based on your garden's design and your preferences for plant density.

'Henry Duelberg' Salvia is not typically known for being invasive or spreading aggressively like some other types of salvias. However, it can gradually spread through self-seeding and by forming clumps over time under the right conditions. Here's what you should know about its spreading habits:

Clumping Growth: 'Henry Duelberg' salvias tend to grow in clumps, gradually expanding their size as they mature. They produce new stems and foliage from the base of the plant, which can make them appear wider over the years.

Self-Seeding: These salvias may also self-seed in the garden. This means that if the conditions are suitable, they can produce seeds that fall to the ground and potentially germinate to create new plants nearby. However, their self-seeding tendency is generally not as aggressive as some other salvia varieties.

Control: To control spreading, you can deadhead the spent flowers before they go to seed. Deadheading removes the seed heads, reducing the chance of self-seeding and helping to prolong the blooming period.

Containment: If you want to prevent the salvias from spreading beyond a certain area, you can install barriers or edging materials in the soil to restrict their growth.

Regular Pruning: Regularly pruning and shaping your 'Henry Duelberg' salvias can help maintain a more compact and controlled appearance. Pruning also encourages bushier growth.

While 'Henry Duelberg' salvias can slowly spread and naturalize in the garden, they are generally well-behaved and not considered invasive. Proper care, including pruning and deadheading, can help you manage their growth and maintain their desired appearance in your garden.

To keep 'Henry Duelberg' Salvia and other salvias bushy and compact, you can follow these tips:

Regularly prune your salvias to encourage bushy growth. Pinch or trim back the tips of the stems throughout the growing season, especially after the first flush of flowers has faded. This process, known as deadheading and pinching, promotes branching and stimulates new growth from lateral buds.

Remove Dead Growth:
Trim away any dead or yellowing foliage and spent flower spikes. Removing dead or dying growth helps redirect the plant's energy to healthy and actively growing parts.

Start pinching or pruning in late spring or early summer after the first wave of blooms has finished. Continue this practice throughout the growing season, as needed, to maintain the desired shape and fullness.

Ensure that your salvias are planted with adequate spacing to allow for good air circulation. Proper spacing prevents overcrowding, reduces the risk of disease, and promotes bushier growth.

Provide a balanced, slow-release fertilizer in the early spring to supply essential nutrients for healthy growth. Avoid excessive use of high-nitrogen fertilizers, as they can lead to excessive vegetative growth and potentially reduce flowering.

Ensure your salvias receive the recommended amount of sunlight. Full sun or at least 6-8 hours of direct sunlight per day is ideal for promoting compact and bushy growth.

Maintain consistent moisture in the soil. While salvias are relatively drought-tolerant once established, they benefit from regular watering to encourage lush foliage and flowering. However, avoid overwatering, as it can lead to root rot.

Apply a layer of mulch around the base of your salvias to help retain soil moisture, regulate soil temperature, and suppress weeds. Mulching also keeps the root zone cool and healthy.

By implementing these practices, you can help your Salvia plants maintain a compact, bushy, and attractive appearance throughout the growing season, with abundant blooms and healthy foliage.

'Henry Duelberg' Salvia can do well in containers under the right conditions, but there are some factors to consider when growing salvias in pots:

Container Size: Choose a container that provides enough space for the root system to develop. A container with a diameter of at least 12 inches or larger is recommended to accommodate the plant's growth.

Potting Mix: Use a well-draining potting mix that is specifically formulated for container gardening. Adding perlite or coarse sand to the mix can improve drainage further.

Watering: Container-grown salvias may need more frequent watering than those planted in the ground. Keep the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out between waterings.

Sunlight: Salvias, including 'Henry Duelberg,' thrive in full sun. Place your container in a location where it receives at least 6-8 hours of direct sunlight each day.

Fertilization: Container plants may benefit from regular feeding. Use a balanced, slow-release fertilizer or a liquid fertilizer according to the recommended dosage on the product label. Fertilize during the growing season, typically in the spring and early summer.

Mulching: Apply a layer of mulch on the surface of the potting mix to help retain moisture and regulate soil temperature. This is especially important in hot climates.

Container Choice: Ensure your container has proper drainage holes at the bottom to prevent waterlogging, which can lead to root rot. Elevate the container slightly to allow excess water to drain away.

Overwintering: In colder climates, you can overwinter your potted 'Henry Duelberg' salvias by moving the container to a protected location or insulating it during the winter months. Salvias are typically hardy in USDA zones 7 and higher but may need protection in colder areas.

Pruning: Regularly deadhead spent flowers and trim the plants to maintain their shape and encourage new growth. This is especially important for container-grown salvias to keep them looking tidy.

'Henry Duelberg' Salvia is a relatively low-maintenance plant that can thrive in containers as long as you provide the right growing conditions. Container gardening allows you to enjoy the beauty of salvias while also giving you more control over soil quality and location.

'Henry Duelberg' Salvia and other Salvia species, including culinary sage (Salvia officinalis), benefit from a balanced and relatively low-nitrogen fertilizer. Here are some fertilizer guidelines for your 'Henry Duelberg' salvias:

Balanced Fertilizer: Choose a balanced, all-purpose granular fertilizer with an NPK (nitrogen-phosphorus-potassium) ratio of around 10-10-10 or similar. This balanced blend ensures that your salvias receive essential macronutrients in appropriate proportions.

Slow-Release Fertilizer: Consider using a slow-release or controlled-release fertilizer. These types of fertilizers provide nutrients gradually over an extended period, reducing the risk of over-fertilizing or nutrient imbalances.

Application Frequency: Apply fertilizer to your 'Henry Duelberg' salvias in the early spring when new growth begins. You can also provide a light application in late summer if you want to encourage additional blooming. However, avoid excessive fertilization, as salvias are relatively low-maintenance plants.

Dosage: Follow the manufacturer's instructions on the fertilizer label for the recommended dosage. Typically, you'll spread the granules evenly around the base of the plant and then water thoroughly to help nutrients penetrate the soil.

Organic Options: If you prefer organic gardening, you can use organic granular fertilizers or compost as a natural source of nutrients for your salvias. Apply compost in the spring as a top dressing or use organic fertilizer blends designed for flowering plants.

Avoid High-Nitrogen Fertilizers: Be cautious with high-nitrogen fertilizers, as they can promote excessive vegetative growth at the expense of flowering. Too much nitrogen can result in leggy plants with fewer blooms.

Monitor Plant Health: Regularly monitor the health of your 'Henry Duelberg' salvias. If the plants appear healthy and are producing an abundance of flowers, you may not need to fertilize as frequently.

Remember that over-fertilization can lead to excessive growth, weak stems, and reduced blooming in salvias. It's generally better to err on the side of caution and provide moderate, well-balanced fertilization. Additionally, healthy soil rich in organic matter can help supply necessary nutrients to your plants naturally.

Pruning 'Henry Duelberg' Salvia is a straightforward process that can help maintain the plant's shape, promote bushier growth, and encourage continuous blooming. Here are the steps to prune your salvias:

Timing: The best time to prune 'Henry Duelberg' salvias is in late spring or early summer, just after the first flush of flowers has faded. You can also lightly prune throughout the growing season to maintain the plant's shape.

Tools: Use sharp and clean pruning shears or scissors. Disinfect your pruning tools before use to prevent the spread of diseases.

Start by deadheading the spent flowers. Locate the faded flower spikes and follow them down to where they meet the main stem. Using your pruning shears, make a clean cut just above a leaf node or set of leaves below the spent flower spike. This encourages the plant to produce new flower buds and prolongs the blooming period.

To encourage bushier growth and prevent legginess, you can pinch back the tips of the stems throughout the growing season. This can be done by using your fingers to remove the top inch or so of the stem tips, including the growing tip. Pinch just above a leaf node or set of leaves. Pinching redirects the plant's energy into lateral branching.

Cutting Back:
In late summer or early fall, after the main blooming period has passed, you can perform a more substantial pruning. Trim back the entire plant by cutting it back to about one-third of its height. This helps rejuvenate the plant and may encourage a second flush of blooms in some regions with long growing seasons.

Fall Cleanup:
In late fall or early winter, after the growing season, you can perform a final cleanup pruning. Remove any dead or diseased branches and clean up any debris around the base of the plant.

After pruning, consider applying a balanced, slow-release fertilizer to provide essential nutrients for new growth.

Regular pruning and deadheading not only maintain the appearance of your 'Henry Duelberg' salvias but also help them produce more flowers and stay healthy throughout the growing season. These practices encourage a longer and more prolific blooming period, making your garden more attractive to pollinators and wildlife.

If your 'Henry Duelberg' Salvia plants are flopping or leaning over, there are several potential reasons for this issue, and it's essential to address the underlying cause. Here are some common reasons why salvias might flop and how to remedy the situation:

Lack of Sunlight:
Salvias, including 'Henry Duelberg,' typically thrive in full sun. If they are grown in partial shade or insufficient sunlight, they may become leggy and prone to flopping. Ensure they receive at least 6-8 hours of direct sunlight per day for sturdy growth.

Inadequate Support:
Taller varieties of Salvia may benefit from support to prevent flopping. You can use stakes or plant supports to prop up the plants and keep them upright. Install these supports early in the growing season to provide proper support.

Overly Rich Soil:
Soil that is too fertile or rich in nitrogen can promote excessive lush growth, which may result in weak, floppy stems. Avoid over-fertilizing with high-nitrogen fertilizers. Instead, use a balanced fertilizer to encourage sturdy growth.

Watering Practices:
Overwatering can lead to overly soft and weak stems, making the plants more prone to flopping. Ensure that you water your 'Henry Duelberg' Salvia plants deeply but allow the top inch of soil to dry before watering again. Properly drained soil is essential.

Proper spacing between salvias is important. Plant them with adequate space to allow for good air circulation and prevent overcrowding, which can lead to flopping due to competition for light.

Regularly pinch or prune back the tips of the stems throughout the growing season to encourage bushier growth and prevent legginess.

Variety Selection:
Some Salvia varieties naturally have more upright growth habits than others. When selecting salvias for your garden, consider choosing varieties known for their sturdy and upright growth if flopping is a concern.

Wind and Rain:
Strong winds or heavy rainfall can cause tall or top-heavy salvias to lean or flop. Providing windbreaks or shelter from heavy rain can help mitigate this issue.

By addressing these factors, you can help prevent or reduce flopping in your 'Henry Duelberg' Salvia plants and enjoy their upright and attractive appearance in your garden.

If your 'Henry Duelberg' Salvia plants are turning brown, there could be several reasons for this issue. Here are some common causes and solutions:

Watering Issues:
Underwatering: Insufficient watering can cause the foliage to turn brown and dry out. Salvia plants typically prefer consistently moist but well-draining soil. Ensure you water them deeply when the top inch of soil feels dry.
Overwatering: On the other hand, overwatering can lead to root rot, which can manifest as browning and wilting foliage. Make sure the soil has good drainage, and avoid waterlogged conditions.

Environmental Stress:
Heat and Drought: Extreme heat or prolonged drought can stress Salvia plants, causing browning and wilting. Ensure they receive adequate water during dry spells and provide some shade during intense heat.
Cold Damage: Salvia 'Henry Duelberg' is generally hardy, but exposure to cold temperatures below its tolerance range can result in browning foliage. Protect the plants during cold snaps.

Pest Infestations:
Check for common garden pests such as aphids, spider mites, or caterpillars that might be feeding on the leaves. Treat the infestation with appropriate measures like insecticidal soap or neem oil.

Fungal diseases, such as powdery mildew, can cause browning and discoloration of Salvia foliage. Ensure good air circulation and avoid overhead watering to prevent fungal issues.

Soil Quality:
Poor soil quality or nutrient deficiencies can affect the health of Salvia plants. Consider amending the soil with organic matter and providing a balanced fertilizer to promote healthy growth.

If the browning is primarily on older leaves or stems, it may be a natural part of the plant's growth cycle. Pruning back the dead or brown sections can encourage new growth.

Inadequate Sunlight:
'Henry Duelberg' Salvia typically thrives in full sun. Insufficient sunlight can lead to weakened growth and browning leaves. Ensure they receive the recommended amount of sunlight for optimal health.

To address the issue, identify the specific cause of the browning in your Salvia plants and take appropriate corrective measures. Proper care, including regular watering, suitable environmental conditions, and attention to potential pests and diseases, will help maintain the health and appearance of your 'Henry Duelberg' Salvia plants.

Our Process

We have perfected packaging and shipping plants & trees! That is why we DO NOT use any third-party fulfillment like most other online retailers. Your trees go straight from our farm to your door, safely packaged by our team of seasoned professionals. Our process ensures your plants leave our facility and arrive to your door in the best condition possible!